mc8051fun/mc8051fun.h

#ifndef MC8051FUN_H
#define MC8051FUN_H

#include <stdint.h>
#include <8052.h>



void uart_send_chr(char tx_data);
void uart_send_str(const char *str);

void uart_init_(uint8_t timer_init,uint8_t x2);

#define uart_init(baud,x2) \
	uart_init_(256L-FOSC/12L/(baud*16L/(1<<x2)),x2)


#define setbits(var,bits) (var|=bits)
#define unsetbits(var,bits) (var&=(bits^0xff))



int8_t rotary_encoder_stat(uint8_t b);

extern uint8_t sevenseg_dec[10];
extern uint8_t sevenseg_dec_inv[10];

/**
 * Minimum frequency is 15 Hz @ FOSC of 11 Mhz
 */
#define default_timer16_init_val(freq) ((65536L)-FOSC/12L/freq)
#define default_timer8_init_val(freq) ((256L)-FOSC/12L/freq)

#define at89xx_6t_timer16_init_val(freq) ((65536L)-FOSC/6L/freq)
#define at89xx_6t_timer8_init_val(freq) ((256L)-FOSC/6L/freq)


#define STC15XX		1	// STC15xx family
#define AT89XX		2	// AT89XX family
#define AT89XX_6T	3	// AT89C89C52 in 6T mode 
	
#if MCU==AT89XX_6T 
#define timer8_init_val(freq) at89xx_6t_timer8_init_val(freq) 
#define timer16_init_val(freq) at89xx_6t_timer16_init_val(freq) 
#else
#define timer8_init_val(freq) default_timer8_init_val(freq) 
#define timer16_init_val(freq) default_timer16_init_val(freq) 
#endif


uint16_t int_to_bcd(uint16_t i);
int getbutton(uint8_t pinval, uint8_t *button);
extern uint8_t getbutton_time;


/* a different representation of pins, which 
 * lets us iteratate over pins.
 * But its slower, of course */
typedef struct {
	uint8_t port;
	uint8_t pin;
} i8051pin_T;





#endif